National Medical Center / World Health Organization / U.S. Public Health Service / U.S. Food and Drug Administration / National Center on Birth Defects and Developmental Disabilities / Oxford University / Centers for Disease Control and Prevention / /
Person
Van Allen / Ann Epidemiol / /
Product
folic acid / /
PublishedMedium
The New England journal / /
Region
Latin America / East Africa / New England / Central Africa / East Asia / /